PulseTech Products’ solar-powered solution continually charges, maintains and significantly extends the normal lifecycles of 12-volt and 24-volt batteries, company officials said. Multiple school systems and commercial fleet operators have partnered with PulseTech to install solar products designed for any 12-volt or 24-volt battery — available in several versions. A popular choice is the SP-5, which provides a full 5 watts of power in a compact, durable solar panel, according to the company. It offers clean, renewable energy for vehicles that are stored outside and unable to hook up to outlets. The SP-5 replaces the power loss from electrical accessories that occurs even when the ignition is turned off, and its patented Pulse Technology removes damaging sulfate crystals from the battery plates, company officials said.